1251368280042 has 32 divisors (see below), whose sum is σ = 2714589448704. Its totient is φ = 383010854400.

The previous prime is 1251368280031. The next prime is 1251368280061. The reversal of 1251368280042 is 2400828631521.

It is a junction number, because it is equal to n+sod(n) for n = 1251368279976 and 1251368280003.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 149609434 + ... + 149617797.

It is an arithmetic number, because the mean of its divisors is an integer number (84830920272).

Almost surely, 2^{1251368280042} is an apocalyptic number.

1251368280042 is an abundant number, since it is smaller than the sum of its proper divisors (1463221168662).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1251368280042 is a wasteful number, since it uses less digits than its factorization.

1251368280042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 299227294.

The product of its (nonzero) digits is 184320, while the sum is 42.

The spelling of 1251368280042 in words is "one trillion, two hundred fifty-one billion, three hundred sixty-eight million, two hundred eighty thousand, forty-two".